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SEOUL, July 18 (Reuters) - North Korea will issue "an important report" at noon local time(0300 GMT), its state news media said on Wednesday.

"An important report will be issued in the DPRK at 12:00 (local time) Wednesday," KCNA news agency said in a single-line dispatch.

No further details were given by the reclusive state, although the last time the last time the agency used this wording was when leader Kim Jong-il died in December.

The statement caused financial markets in Seoul to fall sharply.

A spokeswoman for the South Korean presidency said she was not aware of what could be in the announcement. Authorities in Seoul also said there were no signs of a nuclear test by North Korea.

The statement comes after young leader Kim Jong-un reshuffled his top military over the past few days, ousting a senior general. (Reporting by Jack Kim; Editing by David Chance)

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